Drainage structure



F. J. SCHWEMLER 1,997,201

DRAINAGE STRUCTURE April 9, 1935.

2 Sheets-Sheet 1 Filed Aug. 4, 1931 r o m w Im 7 1 w m 7 1 J lwemler flltorney l atented Apr. 9, 1935 i UNITED 1 s 1,997,201 DRAINAGE sTRiiGTURE' Frank J. sch'wemler, ShakerHeighta Qhio I Application.August This, invention relates to a throat for use in connection withzcatch basinsand catch basin headers of the type commonly installed, in, the tree lawn and in which the, header inlet opening is located in the face of the curb and extends upwardly from the pavement level, andparticularly to a throat forthis purposewhich is exposedto water flow along the curb or across the pavementsurfaceand which is operable to baffle the water and to collect and to discharge it-into the catch basin.-

' The principal object of the present invention to providea throat which is supplementary to the catch basin header andmayreadily be installed in the pavement adjacentth'ecurb in complee mentary relation to headers which have previously been installed. V

Another object is-to provide a receiving throatof this character which may be installedin such connection with only very slight changes'in the portion of thepavement adjacent the header and without interfering with any subterranean conduits, turmels, etc. often existing in or beneath pavements. a

Another :object .is to effect reception and diversion of water from the pavement and to dis charge the same expeditiouslyinto thev catchbasin and to accomplish this result by a rigid weight supporting throat structure which is neat.in-

appearance, simple in {construction and .eco-v nomical to manufacture. V i

In mostcities and counties, certain limitations are imposed in regard to'catch basinsjand headers therefor, particularly in case of pavements having a curb and in which the catch basin header is disposed in the tree lawn with'an uprightforward face and opening lying in the plane of the curb; In many instances, the specifications limit the heightof the curb, and correspondingly the.

header, as well ,as the pavementlevel adjacent the header opening. Consequently, the. inlet opening of the header is of such small size that in=case of ordinary'rainfall it will not, admit water in, sufiicient' quantityand flooding of the adjacent pavement results. Furthermore, dueto the relative smallness, ofthe opening and the re-' sultant accumulation =of. pools' of "wateron the pavement surface," sticks, "leaves and foreign matter which would ordinarily pass into the" header opening with the flowing water,.accumu'-.

late in the pool and the accumulated mass as a whole reaches the opening of the header and additionallyblocks the same.

On the other hand,"if this water. can be disposed of quickly and Withoutaccumulating in' pools,;anyisuchforeign matter will pass into the header opening as quickly as transported thereto and in small quantities and the opening is generally large enough to receive the same under such conditions.

' cated'by the'line -"-.-5 ofFig. 1;

An :importantladvantageof the present inventionzisthe provision of.-a supplemental throat forjassisting in breaking the'flow of water across the pavement or along'the curbpast the header opening and discharging. the same promptly and expeditiously the catch basin so as to elimi-., nate any accumulation on the. pavement; .The

manner in which: the throatof the present invention effects this result will become apparent from the following specification and drawings, wherein Fig. l-is'a planview of a throatembodying the principles of the present invention shown in connection-with companion'catch basin headers;

Fig. '2 is a plan view illustrating the use of thethroat in connection with a'single catch basin header; 1 i

3 is a plan viewof a slightly-modified throat installed in connection witha single catch basin headet r Fig. 4 isa cross sectional viewtakenon aplane indicated by. the line 44 of. Fig. 2, showing the.

throat illusconnection with companion headers i and 2'- whichvsurmount companion catchbasins 3' and 4 respectively, the catch basins 3 andd having their front walls!) disposed substantiallyinor slightly beyond the curb line of the pavement.

The header 1: is of theus'u'al. constructionand comprises an Iupri t frame 5 fiangedat the bottom as indicated at l to rest upon the walls of the catch basin. The header is p'rovided with the usual removable cover 8 andis open along the front wall as indicated at 9 and is of such-height that when mounted up'onthe walls of the catch basin, the upper surface of theheader'lies substantially in the plane of the upper surfaceiof the .curb. Thus the opening it is limited in height bythe particular curb used.

Since the curbs, for economy, are limitedin height and, since, for the same reason, the header is kept at a minimum' size, the opening 9 therein is only sufficiently large to accommodate theflow of water under normal conditions of rainfall and is insufficient to accommodate the water resultant from severerains. Asa result, the throat H! is even excessive flows can be accommodated.

In Fig. 7 the usual construction of pavement is illustrated and comprises a cement base B provided for supplementing the opening 9 so that which is faced with suitable brick or other facing layer F. The throat comprises generally an elongated weight supporting box structure, preferably in the form of a casting, having an upright forward wall I I, and rear wall I Zandbeing closed at the ends by suitable end walls 13.; ,The box is preferably spanned acrossits upper face by suitable grating I l so that any water passing thereover is bafiled and directed into the interior of the box. The rear wall is also weight'supporting.

The floor I of the box is preferably sloped from its ends toward an intermediate portion, the sloping portions being indicated at 16 in Fig. 5, and also slopes fromthe forward wall downwardly toward the rear wall. Consequently, any

water entering'through the grating is directed promptly and expeditiously toward the central portion of the box. At 'the central portion of the box the rear wall is: provided with'one or more suitable openings Ill-from which any'water received is discharged into the basin.

The throat is mounted in the'pavement directly in front of theheader with which to'be'associated. This may be accomplished. readily by suitably sloping the concrete base portion B to conform to the underside of the floor l5, and, continuing along the same plane of inclination, sloping the front wall of the catch basin as indicated at l9. It should be notedthat the depth of the throat is such that when placed in operating position, the floor thereof does not extend below the normal bottom level of the baseB of the pavement and hence does not interfere with existing subterranean conduits andthe like.

If the box is installed at the initial construction of the basin and pavement, it mayreadily be dropped into place and supported and the concrete poured thereabout. J

The opening I! dischargesinto the passage formed in the front wall of the catch basin and from this into the basin proper, thus providing an ing the exposed opening, 9. The rear wall l2 of the throat is preferably upright and vertical so as to snugly engage, in face to face relationship,- the exposed front wallof the header and pref,- erably is coextensive with the frontface of the header or protrudes slightly beyond the .header at its ends so as to abut the curb. Thus the curb and header cooperate to brace the throatin position and the throat and header. form substantially a resultant unitary structure. If desired, 2. depending flange'ZZ may be provided on the frontwall of the throat so as tointerlockwith the concrete base B and thus. additionally support the throat. l v

The throats illustrated inFigs. 1 and2 are the same in all respects, the header in Fig. 2 being designated lb. In Figs. 3 and 6 aslightly modi- .fied throat I 0 is shown installed in front of a single catch basin header Ia;,the parts thereof corresponding to those of the throats above described being designated by. corresponding primed numerals.

Since the floor l5 of the throat slopes both to ward the midportion and rear. opening, accumulation of debris, water and ice and the like in the throat is prevented. a

It is apparent from the foregoing description that the throat herein described is effective for the purposes above set forth, is easily handled and installed and has a neat appearance.

Furthermore it is apparent that no sudden drop or pocket in the pavement surface with the resultant annoyance to vehicular traffic results while at the same time a steep runoff adjacent the header is provided.

I Having thus described my invention,

I claim: 7 I

1. A supplemental reception throat for catch basins of the curb opening type, comprising an elongated box structure having weight supporting front and rear walls and end walls and spanned at the top by a grating, said box having a floor inclined downwardly from the front wall toward the rear wall and spaced below the grating throughout its entire surface a suflicient depth to lie between the upper and lower surfaces of a pavement with which to be associated when the upper 1 limit of the throat is disposed substantially at the level of the adjacent pavement surface, said rear wall having an opening extending upwardly from the floor level adjacent thereto'for discharging the contents of the box, the rear wall surface of the box defining the rear limit of the throat whereby it may lie in the plane of the curb of the pavement in which the box is installed and the throat is entirely exposed in the pavement and the curb adjacent the header need not be disturbed.

2. A supplemental reception throat for catch basins of the curb opening type, comprising an elongated box structure having weight supporting front' and rear walls" and end walls and spanned at the top by a grating, said box having a floor inclined downwardly from the front wall toward the rear wall and spaced below the grating throughout its entire surface a sufficient depth to lie between the upper and lower surfaces of a pavement with which to be associated when the upper limit of the throat is disposedsubstantially at the level of the adjaadditional opening into the-basin without enlargthe curb adjacent thefheader need not be disturbed, said rear wall being of greater length than the curb face of the header whereby movement of the throat is resisted by the curb.

3. A'supplemental reception throat for curb 'opening catch basins comprising an elongated weight .supporting box having front wall and weight supporting rear wall and end walls,'and spanned at the top by a grating, said box having a'floor inclined downwardly from the front wall :to the rear wall and from the ends toward the longitudinal midportion and spaced below the grating over its entire surface a sufficient depth to lie between the upper and lower surfaces of a pavement with which to be associated when-the upper limit of the box is disposed substantially in theupper surface of the pavement, said rear wall having an opening extending upwardly from the floor for discharging FRANK J. SCHWEMLER. 

